Question

What is the first step in glycolysis?

Answer 1

Glycolysis:

1. Glycolysis is a metabolic process that functions as the basis of both aerobic and anaerobic cellular respiration.
2. During glycolysis, pyruvic acid is obtained from glucose.

The first step in glycolysis:

1. The conversion of D-glucose to glucose-6-phosphate under the action of hexokinase enzyme is the first step of glycolysis.
2. Glucose is a 6-membered ring molecule found in the blood, usually the result of the breakdown of carbohydrates into sugar.
3. It enters the cell via., a specific transport protein and is transported from outside the cell to the cytosol of the cell.
4. The overall reaction of glycolysis that occurs in the cytoplasm is simply expressed as:
   C₆H₁₂O₆ + 2 (ADP) + 2 (NAD⁺)+ 2 P$\to$ 2 (pyruvate)+ 2 (NADH) + 2 (ATP) + 2 H⁺